Everyone in Arc'teryx's Vancouver office owns at least one of these 'Atom LT' jackets because they're so versatile and offer "all the comfort of a sleeping bag". - Combining the benefits of a lightweight windbreaker and heavy-duty winter coat, this style is made from breathable, water-resistant Tyono™ and padded with Coreloft™ insulation for maximum warmth - Elasticated trims keep the hood and cuffs in place - No Slip Zip™ means it won't open on its own - Stretch-fleece side panels wick sweat and help regulate body temperature - Highly compressible and easy to pack into its own pocket - Use the drawstring at the hem to adjust the fit